HATFIELD, Associate Judge.
This is an appeal from the decision of the Board of Appeals of the United States Patent Office affirming the decision of the Primary Examiner rejecting claims 4 and 6 in appellant's application for a patent for an invention for a liquid level indicating device for use particularly on ships to indicate the level or amount of water in a boiler. The invention is of particular use when the ship rolls or pitches, and the water in the boiler surges...
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